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Current Cardiology Reports

, 15:400 | Cite as

How Do Elevated Triglycerides and Low HDL-Cholesterol Affect Inflammation and Atherothrombosis?

  • Francine K. WeltyEmail author
Lipid Abnormalities and Cardiovascular Prevention (G De Backer, Section Editor)
Part of the following topical collections:
  1. Topical Collection on Lipid Abnormalities and Cardiovascular Prevention

Abstract

This review article summarizes recent research into the mechanisms as to how elevated levels of triglyceride (TG) and low levels of high- density- lipoprotein cholesterol (HDL-C) contribute to inflammation and atherosclerosis. Evidence supports the role of TG-rich lipoproteins in signaling mechanisms via apolipoproteins C-III and free fatty acids leading to activation of NFKβ, VCAM-1 and other inflammatory mediators which lead to fatty streak formation and advanced atherosclerosis. Moreover, the cholesterol content in TG-rich lipoproteins has been shown to predict CAD risk better than LDL-C. In addition to reverse cholesterol transport, HDL has many other cardioprotective effects which include regulating immune function. The “functionality” of HDL appears more important than the level of HDL-C. Insulin resistance and central obesity underlie the pathophysiology of elevated TG and low HDL-C in metabolic syndrome and type 2 diabetes. Lifestyle recommendations including exercise and weight loss remain first line therapy in ameliorating insulin resistance and the adverse signaling processes from elevated levels of TG-rich lipoproteins and low HDL-C.

Keywords

Triglyceride HDL-C Triglyceride-rich lipoproteins Apolipoproteins Apolipoprotein C-III Inflammation Foam cells Fatty streak Reverse cholesterol transport Cholesterol efflux Toll receptors Insulin resistance Metabolic syndrome 

Notes

Compliance with Ethics Guideline

Conflict of Interest

Francine K. Welty declares that she has no conflict of interest.

Human and Animal Rights and Informed Consent

This article does not contain any studies with human or animal subjects performed by any of the authors.

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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Beth Israel Deaconess Medical Center and Harvard Medical SchoolBostonUSA

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